All laptop battery life span depend on what you are doing and what type of Hard Drives are being used. This laptop comes with a 128GB SSD main drive for OS, but has a normal 1TB HD for secondary. If you replace the secondary HD with a SSD Drive you will increase battery life. If you are only doing Office and Internet stuff, battery should last 2 hrs. If you are playing games on this using battery, the graphics card will drain the battery. I haven't checked yet, but I am sure there is a high amp battery with more cells if you desire a longer battery performance.